Problem Description

A string's "power" is defined as the length of the longest run of identical consecutive characters. Find the maximum power in the given string.

Input Format

A single string containing lowercase letters.

Output Format

The power of the string (length of longest consecutive identical characters).

Constraints

• 1 ≤ string length ≤ 1000

• String contains only lowercase letters

• Count consecutive identical characters

• Return maximum run length found

• Single character has power 1

Sample Input/Output

Explanation

Runs: a(1), bb(2), ccc(3), dddd(4), e(1). Maximum run length is 4.